Mirfak
E554032
Mirfak is the brightest star in the constellation Perseus, a luminous supergiant visible to the naked eye in the northern sky.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mirfak canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5911118 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Mirfak Context triple: [Perseus constellation, contains, Mirfak]
-
A.
Deneb Algedi
Deneb Algedi is a luminous star in the constellation Capricornus, notable as its most prominent and easily identifiable stellar member.
-
B.
Rho Tucanae
Rho Tucanae is a star located in the southern constellation Tucana.
-
C.
Arneb
Arneb is a luminous white supergiant star in the constellation Lepus, notable for its high brightness and advanced evolutionary stage.
-
D.
Tau Canis Majoris
Tau Canis Majoris is a very luminous, massive blue-white multiple star system located in the constellation Canis Major and is one of the brightest members of the open cluster NGC 2362.
-
E.
Gamma Tucanae
Gamma Tucanae is a star in the southern constellation Tucana, visible to the naked eye and used as a reference point in that region of the sky.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Mirfak Target entity description: Mirfak is the brightest star in the constellation Perseus, a luminous supergiant visible to the naked eye in the northern sky.
-
A.
Deneb Algedi
Deneb Algedi is a luminous star in the constellation Capricornus, notable as its most prominent and easily identifiable stellar member.
-
B.
Rho Tucanae
Rho Tucanae is a star located in the southern constellation Tucana.
-
C.
Arneb
Arneb is a luminous white supergiant star in the constellation Lepus, notable for its high brightness and advanced evolutionary stage.
-
D.
Tau Canis Majoris
Tau Canis Majoris is a very luminous, massive blue-white multiple star system located in the constellation Canis Major and is one of the brightest members of the open cluster NGC 2362.
-
E.
Gamma Tucanae
Gamma Tucanae is a star in the southern constellation Tucana, visible to the naked eye and used as a reference point in that region of the sky.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Alpha Cygni variable
ⓘ
star ⓘ supergiant star ⓘ |
| belongsToStellarAssociation | Alpha Persei Cluster NERFINISHED ⓘ |
| hasAlternativeName |
Algenib (historical name)
NERFINISHED
ⓘ
Alpha Persei NERFINISHED ⓘ α Per NERFINISHED ⓘ α Persei NERFINISHED ⓘ |
| hasApparentMagnitude | 1.79 ⓘ |
| hasApparentMagnitudeV | 1.79 ⓘ |
| hasBayerDesignation | Alpha Persei NERFINISHED ⓘ |
| hasBDNumber | +49 01100 ⓘ |
| hasColorIndexB−V | +0.48 ⓘ |
| hasColorIndexU−B | +0.33 ⓘ |
| hasConstellation | Perseus NERFINISHED ⓘ |
| hasConstellationAbbreviation | Per NERFINISHED ⓘ |
| hasDeclination | +49° 51′ 40″ (J2000) ⓘ |
| hasDistanceFromEarth |
about 157 parsecs
ⓘ
about 510 light-years ⓘ |
| hasEffectiveTemperature | about 6,350 K ⓘ |
| hasFlamsteedDesignation | 33 Persei NERFINISHED ⓘ |
| hasGalacticLatitude | −13.26° ⓘ |
| hasGalacticLongitude | 146.46° ⓘ |
| hasHDNumber | HD 20902 NERFINISHED ⓘ |
| hasHIPNumber | HIP 15863 NERFINISHED ⓘ |
| hasHRNumber | HR 1017 NERFINISHED ⓘ |
| hasIAUProperName | Mirfak NERFINISHED ⓘ |
| hasLuminosity | about 5,000 times solar luminosity ⓘ |
| hasMass | about 8.5 solar masses ⓘ |
| hasNameOrigin | Arabic ⓘ |
| hasParallax | 6.44 milliarcseconds ⓘ |
| hasParallaxError | 0.18 milliarcseconds ⓘ |
| hasProperMotionDec | −26.25 mas/yr ⓘ |
| hasProperMotionRA | +23.39 mas/yr ⓘ |
| hasRadialVelocity | −2.6 km/s ⓘ |
| hasRadius | about 60 solar radii ⓘ |
| hasRightAscension | 03h 24m 19s (J2000) ⓘ |
| hasSAONumber | SAO 24531 NERFINISHED ⓘ |
| hasSpectralType | F5 Ib ⓘ |
| hasVariableType | Alpha Cygni variable ⓘ |
| isBrightestStarIn | constellation Perseus ⓘ |
| isDominantStarOf | Alpha Persei Cluster NERFINISHED ⓘ |
| isPartOf | constellation Perseus NERFINISHED ⓘ |
| isReferenceStarFor | Perseus constellation pattern ⓘ |
| isVisibleFromHemisphere | Northern Hemisphere NERFINISHED ⓘ |
| isVisibleTo | naked eye ⓘ |
| nameMeaning | "elbow" or "elbow of the Pleiades" in Arabic ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Mirfak Description of subject: Mirfak is the brightest star in the constellation Perseus, a luminous supergiant visible to the naked eye in the northern sky.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.